Patents by Inventor Johan Grenfeldt

Johan Grenfeldt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • OILING DEVICE, GEARBOX AND A METHOD TO LUBRICATE A GEARBOX
    Publication number: 20100018807
    Abstract: A lubrication device for a gearbox during operation with a plurality of gearwheel pairs in constant engagement. The lubrication device has a plurality of respective nozzles for oil supply from an oil pump to the gearwheel pairs by means of a pump from an oil source. To save pump power, a controllable valve, which adjusts the oil supply to the gearwheel pairs in accordance with a varying load upon the various mutually engaging gearwheels, is provided for each nozzle.
    Type: Application
    Filed: October 18, 2007
    Publication date: January 28, 2010
    Inventors: Johan Grenfeldt, Kenneth Hagberg